We developed an electroholography unit, which consists of a special-purpose computational chip for holography and a reflective liquid-crystal display (LCD) panel, for a three-dimensional (3D) display. The special-purpose chip can compute a computer-generated hologram of 800×600 grids in size from a 3D object consisting of approximately 400 points in approximately 0.15 seconds. The pixel pitch and resolution of the LCD panel are 12µm and 800×600 grids, respectively. We implemented the special purpose chip and LCD panel on a printed circuit board of approximately 28cm×13cm in size. After the calculation, the computer-generated hologram produced by the special-purpose chip is displayed on the LCD panel. When we illuminate a reference light to the LCD panel, we can observe a 3D animation of approximately 3cm×3cm×3cm in size. In the present paper, we report the electroholographic display unit together with a simple 3D display system.

© 2005 Optical Society of America

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ApJ

• J.Makino, M.Taiji, T.Ebisuzaki and D.Sugimoto, �??GRAPE-4: A Massively Parallel Special-Purpose Computer for Collisional N-Body Simulations,�?? ApJ 480, 432 (1997). [CrossRef]

Appl. Opt.

• K.Matsushima and M.Takai, �??Recurrence formulas for fast creation of synthetic three-dimensional holograms,�?? Appl. Opt. 39, pp. 6587�??6594 (2000). [CrossRef]

Comput. Phys. Commun.

• T.Ito, T.Yabe, M.Okazaki and M.Yanagi, �??Special-purpose computer HORN-1 for reconstruction of virtual image in three dimensions,�?? Comput. Phys. Commun. 82, 104�??110 (1994). [CrossRef]
• T.Ito, H.Eldeib, K.Yoshida, S.Takahashi, T.Yabe and T.Kunugi, �??Special-purpose computer for holography, HORN-2,�?? Comput. Phys. Commun. 93, 13�??20 (1996). [CrossRef]
• T.Shimobaba, S.Hishinuma and T.Ito, �??Special-Purpose Computer for Holography HORN-4 with recurrence algorithm,�?? Comput. Phys. Commun. 148/2, pp. 160�??170 (2002). [CrossRef]

J. Electronic Imaging

• M.Lucente, �??Interactive Computation of Holograms Using a Look-Up Table,�?? J. Electronic Imaging 2-1, pp. 28�??34 (1993). [CrossRef]

Opt. Express

• T.Ito and T.Shimobaba, �??One-unit system for electroholography by use of a special-purpose computational chip with a high-resolution liquid-crystal display toward a three-dimensional television,�?? Opt. Express 12, No. 9, 1788�??1793 (2004), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-9-1788.">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-9-1788.</a> [CrossRef] [PubMed]

Opt. Lett.

• T.Ito, T.Shimobaba, H.Godo and M.Horiuchi, �??Holographic reconstruction with 10um pixel pitch reflective LCD by reference light of LED,�?? Opt. Lett. 27, 16, 1406�??1408 (2002). [CrossRef]

Proc. SPIE

• H.Yoshikawa, S.Iwase and T.Oneda, �??Fast Computation of Fresnel Holograms employing Difference,�?? Proc. SPIE 3956, pp. 48�??55 (2000). [CrossRef]

Proc.SPIE

• S.A.Benton, �??Experiments in holographic video imaging,�?? Proc.SPIE Vol.IS# 08, 247-267 (1991).
• K.Maeno, N.Fukaya, O.Nishikawa, K.Sato and T.Honda, �??ELECTRO-HOLOGRAPHIC display using 15MEGA pixels LCD,�?? Proc.SPIE 2652, 15�??13 (1996). [CrossRef]

Other

• M.Lucente, �??Diffraction-Specific Fringe Computation for Electro-Holography,�?? Ph. D. Thesis Dept. of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (1994).

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